Improvement in paper-bag machines



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UNrTED STATES PATENT @Erica CHARLES F. ANNAN, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO B. S.

BINNEY, OF SAME PLACE.

IMPROVEMENT IN PAPER-BAG MACHINES.

l Specification forming part of Letters Patent No. 90,624, dated .Ihre l, 1869.

clare that the following is a full and exact de-4 scription thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of my invention'col'isists in a serles of mechanical combinations too complicated to admit of brief description. I will, therefore, proceed to describe it by reference to the drawings.

Figure l is a perspective view of my ma chine, a part of the frame removed so as to show the working parts more plainly. Fig. 2 shows, partly in section and partly in elevation, my machine, the view being taken from the rear.v Fig. 3 is a plan of my machine. Fig. 4c shows in detail the folding-rolls. Fig. 5 represents the paper as it leaves the former. Fig. 6 represents the paper as it passes under the opener. Fig. 7 represents the paper after vit has passed the rst set 0f rollers; and Figs. S and 9 represent the paper after it has passed the'last set, and is a complete bag. y

The same letter, with a number annexed, is used for all parts of the device that act directly together to produce a desired result.

A and B represent the frame of the machine. G, Figs. l and 2, represents the propelling-shaft to the whole machine. G is a gear-wheel, serving to communicate motion to the gears O1 and H1. The shaft O, Figs. l and 2, carries two segment-gears, G2, Fig. l, and O7, Fig. 2 5 also, a toothed clutch, G5, and the bevel-gear Gf", Fig. 3. The large feed-drum G3.

' Figs. l and 2, is hung loosely upon the shaft C, and is so arranged that it only revolves when the clutch G5 is thrown into connection with the clutch-ratchet attached to the drum O3, Fig. 3. This clutch is operated by the cam HZ, Fig. 1, acting through the lever C4. The

mesh into teeth P1, Fig. 2, and thus carry forward the frame P2 P4 P3, Fig. 3, which holds` the back-tucker P6 a limited distance, the spring P5 serving to draw it back. This frame moves backward and forth in the rocking i slides F2 I, Fig. 3. Its front end, to which the folder Fis attached is directed downward, as it moves forward, by the guide P7, Figs. 2 and.3. M3, Figs. I and 3, is the cutting-off knife, and works automatically to cut off the paper at the proper length after it has been fed in by the roller G3. This knife is operated by the cam M, Fig. 2, acting through the lever Ml and link M2. The end of the link MZ, shown at Fig. 3, connects with the swinging socket M4 of the knife M3. T is a bridge, which serves to hold the opener T', Figs. l, 2, and 3. The rollers S S1 R2 R4, Figs. 2 and 4, are all connected together by spur-gear, as shown in Fig. 2, and are driven by the gear-wheel Rl, which meshes with the gear of roller R3. The shaft R is driven by gearwheel R1, Fig. l, which meshes with the large gear E2, Fig. l. The motion of the wheel E2 is not continuous, nor always in the same direction. It makes a partial revolution in one direction, then suddenly stops and makes a partial revolution in the other direction, its direct motion greatly exceeding its reverse motion. As this wheel E2V connects, through R1, R, and R2, as has been shown a-bove, with the rollers S S1 and R3 R4, it will be seen that these rollers will partake of that intermittent and reverse inotion. This peculiar motion is i'nparted to the gear-wheel E2 by a clutch, E4, on the shaft El. Both gears E2 and E3 on the shaft E1 are free to revolve independent of the shaft; but the clutch E4 must revolve with the shaft, and, having two notched faces, it will cause either the gear E2 or E3 to revolve when forced against one or the other.

Then the clutch occupies a middle position between the two gear-wheels neither of them will revolve, although the shaft E1 is in motion. When the clutch E4 is in contact with the wheel E2, then the wheel E2 will partake of the direct motion of the shaft El; but when the clutch is in connection with the wheel E3, then the wheel E3, acting through the wheel F5, Fig. 2, and shaft F, Figs. 1 and 2, gear F1, Fig. l, and gears F2 F3, Fig. l, w11] give a reverse motion lo the gear-wheel E2. The clutch E4 is actuated by the segment-cam D3, Figs. 1.

and 2, acting through the bent lever E5 E6, Fig. 1. Y

H7, Figs. 1, 2, and 3, is a vertical tucker, Which serves to pass one fold of the bag down between the rollers R3 R4. rlhis tucker is operated by the cam H3, Fig. 1, which operates the lever H4, beam H5, and stays H6 H6. L6 is a horizontal tucker, which serves to pass one fold of the bag between the rollers S S', and is operated by the cam D2 through the lever L, the link L2, the bar L3, the swinging arm L4 L4, and the slides L3. K, Figs. 1 and 2, is a face-cam, operating, through the lever K4, bent link K2, and link K3, to draw down the standard K4, which, being connected with the housings of the rollers R3 R4, serves to draw them down sufficient] y, so that the roller R3 will not bear upon the roller S, but yet not far enough to throw it out of gear with it.

The operation of my machine may be eX- plained as follows: The paper from which the bag is to be made is fed into the machine by means of the large Vdrum G3, Figs. 1 and 2, which, acting in combination with a former, (said former being made and arranged in any ofthe various known methods,) leaves the paper in the shape represented at Fig. 5.

As this operation thus far is common to other machines it does not need a particular description.

After a sufficient length of the paper, in the form represented in Fig. 5, is fed in to have reached Well onto the opener T1, the feeding device is thrown out of gear. The tucker PG moves forward and slides the paper under the opener, the opener acting at the same time to hold back the upper part of the bag, as indicated by Fig. 6. The paper is now cut off, and being seized between the rollers S and R3, Fig. 2, its pointed end a, Fig. 6, is passed over the rollers R3 R4, so that the tucker H"I may of the rollers S S', when the tucker L6 will move up, and, striking at the line c d, Fig. 7, will fold and tuck this part between the rolls S S', which continue to revolve in the proper direction until the whole bag has been drawn through them. The bag is now in the form shown at Fig. 8, and is complete.

Fig. 9 represents the same bag open.

During the various foldings at the proper intervals the adhesive mixture is applied, so that the bag leaves the machine complete in all respects. v

What I claim as my invention, and desire to secure by Letters Patent of the United States,

1. The segment gear-wheel G7, in combination with a tucker-frame, P3 P3 P4, operating substantially as described, and for the purpose set forth.

A2. The tucker-frame P3 P3 P4, in combination with the pivoted slides P2 P2 and the guides P7 P7, substantially as described, and for the purpose set forth.

3. The tucker P3, in combination with the opener T', operating substantially as described,

CHS. F. ANNAN.

Witnesses:

FRANK G. PARKER, A. HUN BERRY. 

